The Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems (WECWIS 2000) was held at the Crowne Plaza San Jose/Silicon Valley in Milpitas, California on June 8-9, 2000. The purpose of this workshop was to bring together leading practitioners, developers and researchers to explore the challenging technical issues and find feasible solutions for advancing the current state of the art in e-commerce and web-based information systems. In particular, the workshop was interested in the infrastructure issues to facilitate e-commerce and Web-based information systems.WECWIS 2000 was successful. There were three invited talks, one industrial panel discussion and six technical sessions. The keynote speech, "The global trading web: A strategic vision for the Internet economy," was delivered by Dr. Jay M. Tenebaum, VP and Chief Scientist, Commerce One, Inc., on June 8 immediately following the opening remarks by the conference chair. The banquet address, "Business issues in e-commerce," was delivered by Mr. Daniel Druker, General Manager, Hyperion e-Business Division. Finally, a lunch address, "B2C, B2B, N2N, N2M: Why 2 is so instrumental?" was delivered by Mr. Mstafa A. Syed, VP of Technology, VertialNet, Inc.The industrial panel was moderated by Dr. L. Mason and Dr. Z. Zhang, both of Blue Martini Software. The panelists included J. Becher, Accrue Software; L. Mellot, Business Objects; A. Srivastava, Blue Martini Software; and C. Zhou, IBM. The panel discussion topic was "Can e-business intelligence survive?" Among the many interesting issues being discussed were: Will privacy concerns stunt e-business intelligence utility? Will integrated e-commerce solutions be able to collect and analyze click steams, contents, products and sales data simultaneously? To what extent can out-of-the-box combined e-commerce and e-business intelligence solutions be useful? Is data mining useful in B2B e-commerce? Both positive and negative responses were hotly debated.There were a total of 30 papers included in the technical presentations, organized into six sessions. They were selected after rigorous reviews by the program committee members. The presented papers cover a wide range of topics, from framework, architecture and protocol issues of e-commerce to various types of e-services to web-based information systems for facilitating e-commerce. The rest of this report provides a brief summary of the technical presentations given in the workshop. The entire workshop proceedings is available from the IEEE Computer Society.